Improvement in harvesters



VUNITED STATES PATENT OFFICE.

SAMUEL N. PURSE, oE ASHLEY, MISSOURI.

IMPROVEMENT IN HARVESTERS.

Specification forming part of Letters Patent No. 26,616, dated December27' 1859 To all whom it may concern:

Be it known that I, SAMUEL N. PURSE, of

' Ashley, in Pike county, and State of Missouri,

have invented a new and useful Improvement in Harvesting-Machines;m andIdo hereby declare that the following isa full, clear, and exactdescription of the same, reference being,r had to the annexed drawings,making part of'- lhis specification, in which- Figure 1 is a plan, andFig. 2 a section, through A A.

rEhe nature of my invention consists in a novel arrangement andcombination of devices for changing the velocity of the knives.

To enable others skilled in the arts to make and use my invention, Iwill proceed to describe the construction and operation thereof.

Similar letters of reference represent corresponding parts of thedifferent tigures of' the drawings aforesaid. i

,A A is the main frame of the machine, which is mounted upon a pair oftruck-wheels. (Shown at J and H.)

Against the inside of the Wheel H a cog- Wheel, t', is fixed, whichmeshes in a pinion fixed upon the shaft iat j. ,This pinion is thrown inand out ot' gear with the wheel i by nieansof a lever, c. Upon theopposite end of the shaftj another pinion is fixed, which meshes in acorresponding pinion, m,which drives the shaft O, upon Which it isfixed, and upon this shaft O a crank, q, is fixed, to which 0,and thewheel l is made to move back and i forth upon a feather, r, so that itmay be adjustedto mesh in the wheels m or n, the wheel n being madesmaller than the wheel m, whereby l the velocity of the shaft O will beincreased whenever the wheel lismade to mesh into the wheel n, as willalso the knives, which is the object of adjusting these wheels andshaftsin the manner described.

The rest of the machine'to which my invention is applied is similar toother machines in use, and need not therefore be here described.

What I claim as myinventlon, and desire to secure by Letters Patent, is-

The arrangement and combination of the i shafts 0 and j with thedriving-wheel and cut-1 ter, and the pinions l, m, and n, as shown, for

the purpose of changing' the velocity of the knives, in the mannerdescribed.

SAMUEL N. PURSE.

Witnesses i SAMUEL M. MARTIN, WILLIAM H. PURSE.

